Journal ArticleDOI
Simulation of macro EMG motor unit potentials
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TLDR
In the simulations of Macro EMG the area of the signal appears to be a better measure of the strength of the motor unit than the amplitude, and therefore new aspects of the Motor unit can be quantified.About:
This article is published in Electroencephalography and Clinical Neurophysiology.The article was published on 1983-07-01. It has received 125 citations till now. The article focuses on the topics: Motor unit.read more
Citations
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Methods for estimating numbers of motor units in biceps-brachialis muscles and losses of motor units with aging.
TL;DR: A new method is presented, here applied to the biceps‐brachialis muscles, for estimating motor unit numbers in healthy subjects, which combines isometric contraction, intramuscular needle electrode recordings, and spike‐triggered averaging techniques to measure the sizes of motor unit potentials as recorded in the innervation zone with surface electrodes.
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Detection of motor unit action potentials with surface electrodes: influence of electrode size and spacing
TL;DR: A computational procedure, based on the notion of isopotential layers, was developed which substantially reduced the calculation time required to estimate motor unit action potentials.
Journal ArticleDOI
A computer simulation of conduction block: effects produced by actual block versus interphase cancellation.
TL;DR: Measurements of CMAP amplitude and area may be misleading if there is significant abnormal temporal dispersion, and quantitation of the degree of conduction block is difficult without knowledge of which subpopulations of axons are affected.
Journal ArticleDOI
Simulation of concentric needle EMG motor unit action potentials
TL;DR: It is inferred that different features of the CN MUAP are determined by the distribution of muscle fibers within different portions of the MU territory and thus provide complementary information about the MU architecture.
Journal ArticleDOI
Individual Differences in White-Matter Microstructure Reflect Variation in Functional Connectivity during Choice
Erie D. Boorman,Jacinta O'Shea,Catherine L. Sebastian,Matthew F. S. Rushworth,Heidi Johansen-Berg +4 more
TL;DR: Probabilistic tractography, a technique for identifying fiber pathways from diffusion-weighted imaging (DWI), was used to reconstruct the anatomical networks linking the component brain regions involved in making decisions and demonstrated a relationship between individual differences in functional and structural connectivity within human brain networks central to action choice.
References
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Journal ArticleDOI
The specific resistance of biological material—A compendium of data for the biomedical engineer and physiologist
L. A. Geddes,L. E. Baker +1 more
TL;DR: The paper traces the history of, and tabulates determinations of the electrical resistivity of blood, other body fluids, cardiac muscle, skeletal muscle, lung, kidney, liver, spleen, pancreas, nervous tissue, fat, bone, and other miscellaneous tissues.
Journal ArticleDOI
The orderly recruitment of human motor units during voluntary isometric contractions
TL;DR: The contractile properties of human motor units from the first dorsal interosseus muscle of the hand were studied during voluntary isometric contractions using recently developed techniques.
Journal Article
Intra- and extracellular potential fields of active nerve and muscle fibres : a physico-mathematical analysis of different models
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Macro EMG in healthy subjects of different ages.
Erik Stålberg,P R Fawcett +1 more
TL;DR: The findings of the recently developed technique of Macro EMG in healthy subjects of different ages suggest an increase in size of the Macro motor unit potential was found with age, particularly after the age of 60 years.